docs: def validateSQL(self, sql, sqlType="where"):
          """
          The validateSQL operation validates an SQL-92 expression or WHERE
          clause.
          The validateSQL operation ensures that an SQL-92 expression, such
          as one written by a user through a user interface, is correct
          before performing another operation that uses the expression. For
          example, validateSQL can be used to validate information that is
          subsequently passed in as part of the where parameter of the
          calculate operation.
          validateSQL also prevents SQL injection. In addition, all table and
          field names used in the SQL expression or WHERE clause are
          validated to ensure they are valid tables and fields.
  
          Inputs:
            sql - The SQL expression or WHERE clause to validate.
            sqlType - Three SQL types are supported in validateSQL:
             where (default) - Represents the custom WHERE clause the user
             can compose when querying a layer or using calculate.
             expression - Represents an SQL-92 expression. Currently,
             expression is used as a default value expression when adding a
             new field or using the calculate API.
             statement - Represents the full SQL-92 statement that can be
             passed directly to the database. No current ArcGIS REST API
             resource or operation supports using the full SQL-92 SELECT
             statement directly. It has been added to the validateSQL for
             completeness.
             Values: where | expression | statement
          """
          url = self._url + "/validateSQL"
          if not sqlType.lower() in ['where', 'expression', 'statement']:
              raise Exception("Invalid Input for sqlType: %s" % sqlType)
          params = {
              "f" : "json",
              "sql" : sql,
              "sqlType" : sqlType
          }
          return self._post(url=url,
                               param_dict=params,
                               securityHandler=self._securityHandler,
                               proxy_url=self._proxy_url,
                               proxy_port=self._proxy_port)